Unit 23, Battersea Business Centre
99-109 Lavender Hill
London SW11 5QL
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    0207 228 1324 Get in touch via phone
    [email protected] Get in touch via email

    Interior Architecture and Schedules

    Interior architecture is where spatial clarity meets refined materiality – it’s the art of shaping how a home feels as well as functions. At Armstrong Simmonds Architects, we bring the same level of care to interiors as we do to the architecture, ensuring every detail aligns with the design vision.

    Based in South West London, our architect studio delivers bespoke interior architecture and specification schedule services that help elevate homes with high-quality finishes, integrated joinery, and coherent material palettes. Whether you’re designing a new-build or transforming an existing property, our approach helps deliver spaces that are both timeless and tailored.

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    Concept
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    Planning
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    Visualisation
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    Technical
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    Specification
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    Interior Design
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    Tendering
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    On Site
    This image represents the fifth stage of an architectural services: Specification, Interior Architecture & Schedules. Our expertise includes developing detailed specifications, integrating specialist glazing components, floor finishes, bespoke joinery, and custom staircase designs. Additionally, our architectural consultancy services support clients in making informed decisions, optimising design solutions, and ensuring the highest standards throughout the project.

    What is interior architecture and how is it different from interior design?

    Whilst they overlap and are very closely linked, there are differences between the two for the purposes of our services: Interior architecture involves the joinery, glazing, finishes, lighting and technical drawing; whilst interior design focuses on furniture, fittings, colours, and decorative styling.

    Why Interior Architecture and Schedules Are Important for Your Project

    Interior architecture brings precision and intent to room layouts, lighting, joinery, and material combinations, making sure every detail supports the way you move, live, and feel at home. Having the vision conveyed clearly not only means the project is delivered as intended, but also that the contractors and specialists can understand who is responsible for the purchase or installation of specific items. Interior architecture schedules provide the framework to allow this to happen, setting out clear lines of responsibility and specification.

    Interior Architecture and Schedules

    Key Advantages of Our Interior Architecture and Schedules

    With over 15 years of experience in high-end residential design, our team understands how to deliver well-resolved projects that are both elegant and practical. Here’s why clients choose us:

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    Integrated Design Thinking – Our architectural services are fully connected, meaning interiors are considered from the early concept stages.

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    Attention to Detail – We develop room-by-room documentation that includes finishes, materials, bespoke joinery, and lighting features.

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    Material and Finish Expertise – From natural stone and specialist glazing to contemporary timber panelling, we understand how to create depth and richness through material choices.

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    Coordinated Drawings and Schedules – Our schedules form part of the construction documentation, enabling accurate pricing and clarity for contractors.

    Let's discuss your project
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    Our Process for Interior Architecture and Schedules Services

    Our process is designed to seamlessly transition from exterior architecture to a beautifully crafted interior:

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    Conceptual Interior Planning

    Early in the project, we begin developing spatial layouts that reflect how each room will be used. We consider circulation, storage needs, natural light, and spatial hierarchy – all tailored to your lifestyle.

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    Joinery and Feature Detailing

    We design key bespoke elements such as kitchen layouts, wardrobes, media units, bookcases, staircases, and other joinery pieces. These are drawn to scale and coordinated with the architectural set and necessary specialists.

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    Material and Finish Selection

    We work with clients to select a cohesive palette of finishes and materials, including flooring, wall treatments, tiles, worktops, and decorative elements. Our goal is to create a unified and enduring aesthetic.

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    Specification Schedules

    We produce detailed interior schedules including:

    • Floor finish schedules
    • Door and ironmongery sets
    • Sanitaryware and fittings
    • Lighting types
    • Joinery specifications and construction notes

    These schedules support accurate cost planning and ensure the builder delivers the correct items onsite.

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    chris walters

    We are glad we found Armstrong Simmonds Architects to help us on our first project. We had bought a run-down terraced house near Clapham Common with the goal of extending and refurbing to increase value. John initially impressed us by first listening carefully to what we wanted to do, then showing us creative ways to achieve the results and finish we were looking for.

    Safe to say we certainly have managed that and both John and Alan have been instrumental in doing so. The guidance and consideration at every step have exceeded our expectations and Alan’s attention to detail during the build has been critical for the high standards we have set for this project.

    They have provided us with a service which reflects every stage of the design and build. Starting with the initial drawings, schedule of works, tendering and interior design. We also employed ASA for Contract Administration to be the key middle-man between us and the builder, which they were happy to help.

    We are now underway with our second project with ASA and they have been able to deliver the final drawings for planning within a fairly tight time frame, without hindering on quality. I know the whole team worked hard to help bring our vision to life and it’s been brilliant working with them over the last 18 months. They have shown a great ability to solve any issues that arose quickly and are able to communicate effectively with different contractors at all levels. I have no doubt the next redevelopment project will go well.

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    Matt Wood

    We chose Alan and John for our extensive project and incredibly pleased with that choice and the result. We have a Victorian terraced house and wanted to do a classic loft conversion and ground floor extension. The Armstrong Simmonds team provided a vision which achieved our goals, but with a design we could have never have thought of ourselves which we love. We used them from start to finish and are incredibly glad we did. Alan supported us through the tender and renovation processes, and we are incredibly pleased with the end-product and the quality of work of builder Cezar of Vecchini. We would highly recommend Armstrong Simmonds for their vision, design thoughtfulness and exceptional assistance through the project. Thanks team!

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    Dom & Kamilla

    We worked with Alan and the team from Armstrong Simmonds for 3 years from start to finish to achieve the full renovation of a London townhouse. It was a challenging brief given the nature of the property but collectively what has been achieved is an outstanding end result. Alan and John thoughtfully incorporated our vision with the realities of converting an old Victorian house and the scrupulous attention to detail, symmetry and balance achieved in the design were instrumental in us choosing Armstrong Simmonds in the first place.

    In addition Alan supported us through the tender and during the renovation working with our excellent builder Cezar of Vecchini to deliver the brief. I would highly recommend if you are looking for a team to turning your vision to the end product with a very high attention to detail while still being good humoured and a generally great guy to work with. Thanks again team. Dom and Kamilla

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    Michael van Ree

    John and his team have been brilliant to work with for our full house renovation and extension in SW London. Our house is quite unique and that combined with it being in a conservation area we knew it wouldn’t be a straight forward planning process – but Armstrong Simmonds did a fantastic job and helped us navigate us through every step. We couldn’t be happier with the detailed design and outcome.

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    Frequently asked questions

    When should I involve interior architecture in my project?

    Ideally, interior architecture should be developed alongside the architectural design and at least once technical stages commence. This allows for a cohesive result and avoids needing to retrofit decisions later in the process.

    What is an interior architecture schedule?

    An interior architecture schedule is a detailed document that sets out the materials, finishes, fittings, and components to be used in the project – as well as who is supplying and installing them. It supports clear coordination with the contractor and ensures that the built interior aligns precisely with the design intent.

    Can you work with an interior designer I've already hired?

    Yes. We’re happy to collaborate with your chosen interior designer, or to provide a complete interior specification service ourselves as part of our broader architectural services.

    How to Request Interior Architecture and Schedules from Armstrong Simmonds Architects Studio

    If you want to explore your project in 3D along with our other architectural services, you can:

    0207 228 1324 Get in touch via phone
    [email protected] Get in touch via email
    Armstrong Simmonds Architects Ltd
    Unit 23, Battersea Business Centre,
    99-109 Lavender Hill, London, SW11 5QL

    Get a free consultation today





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